Slaughterbound

Haste, First Strike
Whenever this creature deals combat damage, create an Astartes Geneseed token with:
"Sacrifice: Add {1}, {b}, or {r}."

At the beginning of your upkeep, if there is an Eightbound, Exalted Eightbound or Slaughterbound in your graveyard, place it onto the battlefield tapped.

{r}{b}; Slaughterbound gets +2/+0 and deathtouch until the end of your turn. Activate this ability only once per game.